Switch arrangement



S WITCH ARRANGEMENT Original Filed Aug. 4, 1924 1 9 *{IE f; 0 t L I I W gnaw Jot Patented June 4, 1929.

UNITED STATES GEORGE HEGEMAN HART, OF WEST HARTFORD, CONNECTICUT.

SWITCH ARRANGEMENT.

Original application filed August 4, 1924, Serial No. 730,035. Divided and this application filed November 9, 1925.

This is a division of my application Serial No. 730,035, filed August 4th, 1924:, for apparatus for controlling electric current.

An object of the invention is to provide an improved manually operable switch of such arrangement that it may be readily connected up and supported, either when it is desired to use the switch in connection with time controlling or thermostatic devices, or when the switch is not to be used in connection with such devices. Also, the switches and the bus bars on which they are mounted are so arranged that the same may be employed on either right or left handed ranges, for instance.

Other objects will be in part obvious and in part pointed out more in detail hereinafter.

The invention accordingly consists in the features of construction, combination of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, andthe scope of the appl1cation of which will be indicated in the appended claims.

In the accompanying drawings: 0

Figure 1 is a schematic View showing, more or less diagrammatically, my improved switch arrangement in connection with heating elements and means for automatlcally controlling such elements; and

Fig. 2 is a sectional view of the manually operable switch, this view being taken substantially on line 22 of Fig. 1.

Referring to the drawings in detail, A, A designate the heating elements which, for 1nstance, may be located within the even of an electric range. B is a manually operable switch mounted on bus bars Gand C. D is a magnetic switch device for automatically making and breaking the current through the heating elements A and A, or either of them, as the case may be. The magnetic switch may be controlled by suitable mechanism, such as a timer or thermostatic device,

or both.

The magnetic switch device is shown for illustrative purposes as having a main switch or circuit breaker which includes a pair of contacts 5 and 6, respectively connected to' Serial No. 67,819.

mentof which is controlled by the armature 8, which, in turn, is controlled by the current passing through this switch and the coils 9 and 10. The pivot of the pivoted switch member 11is connected by a line wire 13 to the bus bar C. The switch member 11 moves between a pair of contacts 1 1 and 15, the for mer of which is connected to one end of the closing coil and the latter to one end of the opening coil. The other end of the closing coil may be connected, as described more in detail in my said original application, by a wire 16 to the closing switch of the timing mechanism and (or) to the "thermostat, and theother end of the openingcoil may be connected by a wire 17 to the opening switch of the timing mechanism and (or) to the thermostat. The wire 19 may lead to the timer and (or) thermostat.

In the drawings I have shown tWo heating elements associated with one manually oper able switch B, the arrangement being such that three degrees of heat may be obtained,

for example, high, medium and low. It is, of course, clear that the manually operable switch here shown is disclosed largely by way of illustration only, and certain features of the invention are not limited to this specific type of switch. In the drawings, I have shown a single switch B, but it is, of course, understood that an electric cooking range is usually provided with a number of such switches associated with the respective heating units, and that any or all of the heating units may be controlled by the timing mechanism and thermostatic device.

The switch B is here shown as having a base 20 mounted on, andsupported by, the bus bars C and C. The switch has a terminal 21 connected by a screw 22 to one of the .bus bars, in the present instance that indicated by the letter C. Opposite the terminal 21 is a terminal 23 connected by a wire 24; to one end of the element A. At the left hand side of the switch is provided a pair of connected terminals 25, 26, electrically connected by a strip 27 and a wire 28 to one end of the element A. At the right hand side of the switch is a single terminal 29 in the plane of the terminals 21 and 26, and this terminal 29 is connected by a strip 30 to a wire 31 lead ing to a wire 32 which connects the elements A and A in series. In the present instance the switch is shown as having a two arined blade 33 adapted to ceuneet the terrai nals 25 and 23, and a three-armed switch bla-de 34 adapted to connect the terminals 21, 26 and 29 in various combinations. These blades rotate in unison and may be thrown by turning a stem or spindle 36 between which and the blades there is preferably provided the usual mechanism for giving the blades a snap movement when the spindle is rotated. This mechanism is not shown, as it forms no particular part of the present invention. When the blades are in the position shown in Fig. 1, the elements are connected in multiple and a high degree of heat is obtained. hen the blades are turned through an angle of 90 to the right, the current will pass tl'irough the element A only, so that a medium heat is obtained. When the blades are turned another 90 to the right, the elements are connected in series so that a low heatis obtained; and when the blades are turned another 90 to the right, the switch is in off position.

In accordance with the present invention, provision is made for employing the switch B on ranges either with or without the automatic control and for mounting the switch either on a left hand or right hand range. To these ends, I provide the bus bar C with two threaded openings 40 and 41 for each switch; and the bus bar C with similarly po sitioned openings 40 and 41. The base of the" switch has holes 42 and 43 adapted to register with the openings 40 and 41 (or 40 and 41, as'the case may be). The screw 22 extends through the base and is threaded into one of the openings 41. The terminal 23 is provided with an arm 44 having an aperture 46 adapted to register with the hole 43. hen the automatic controlling devices are employed. the terminal 23 is not directly connected to the bus bar C. In this event, the base of the switch is secured to the bus bar by means of a screw 46-erctending through the hole 42 and threaded into the opening 40. The line wire 47, leading from the main switch oft-he magnetic device D, is connected to the bus bar C by a relatively short screw 48 threaded into the opening 41 from the rear, as shown in Figs. 1 and 14. The terminal 23 is connected to the line wire 49 leading to the other side of the main switch of the device D. In the event that the range'on which the switch B is mounted is installed without the automatic control, or when. the range is provided with such control and it is desired to disconnect the same for any reason, as, for instance, when it is desired to repair it, the switch may be secured to the bus bar C and the terminal 23 will be directly connected to this bus bar by inserting the screw 46 through the aperture 45 and the hole 43 and screwing the same into the opening 41 of the bus bar C. The bus bars will each be provided at one end with means for attaching the same to leading in wires and, in aright hand range, the attaching means will be at one side of the 'ra'ngeand, in a left hand range, at the other side. It will be seen that, by providing thebus bars C and C with the pairs of openings 40,41 and 40, 41, respectively, and the switch with the holes 42, 43. an d the hole for the screw 22, the same switches and bus bars may be employed either on right or left hand ranges. It may be assumed that the bars are positioned. in a left hand. range, shown in Fig. 1, in which event the bus bar C is above the other one. If the bars are to be used in a-right hand range, then they will be turned 180 end on end, bringingthe bus bar C above-the bus bar C. The holes 42 an d 43 willthen register with the threaded opening 40 and 41, and the screw 22 will he received by the opening 41. Thus, it"is possible to supply the demand for switches and bus bars for both left and right handed ranges from the same stock of switches and bars, so that a material saving in the cost of manufacture and carrying charges is had.

I claim as my invention 1. In combination, a pair of bus bars one of which is provided with apair of openings. a switch having a. base provided with a pair of holes adapted to respectively register with said openings of said bus bar. said switch having a terminal provided with an aperture -registering with one of said h oles. and a screw adapted to pass through either of said holes and into the opening registeringtherewith.

2. In combination, a pair of bus bars provided with pairs of similarly spaced openings, a switch having a base provided with a pair of holes adapted to register with a pair of openings of either bus bar. said switch having a terminal provided with an aperture registering with one of said holes, and a screw adapted to pass through either of said holes and into the opening registering therewith. p I

3. In combination, a pair of bus bars, each having a pair of openings, "the openings in said bars being similarly positioned, a switch having'abase provided with a pair of holes adapted to register with the openings of either eair, said base also having a hole adapted to register with an opening of the other pair, said switch having a terminal provided. with an aperture registering with one of the first mentioned holes. and screws adapted to extend into said holes and to be threaded in said openings.

enonen HEGEMAN HART. 

